Microcontrollers tutorials and projects

GPS coordinates on LCD using pic16f877a

Display GPS Co-ordinates on LCD using pic microcontroller

May 25, 2017 GPS based projects, PIC microcontroller projects

GPS based clock using pic microcontroller

GPS based clock using pic microcontroller

May 25, 2017 GPS based projects, PIC microcontroller projects

IOT Based ICU Patient Monitoring System

IOT Based ICU Patient Monitoring System using pic microcontroller

May 24, 2017 ESP8266, PIC microcontroller projects

Factory Worker Alcohol Detector with Automatic Machine Shutdown System Factory worker alcohol detector with automatic machine shutdown system is a system, that checks the worker condition constantly, either he is in drunk or normal condition if he is in drunk condition then also check the range of this drunk value if it is above the permissible range then shutdown the machine automatically with sending alert message at authorized mobile no. If we see in our industry side, then there are so many machines which are so much costly and their operating system is also so much complicated. For operating this complicated system, the worker should be in medically or mentally fit condition, otherwise a one mistake leads to a serious consequence, such as in the form of life or business loss. If anyone or factory worker take a drunk then, it directly effects on his mental condition and in this condition if he operates the machine then he would damage the machine or loss of the life. For escaping this life or business loss here we have designed a system that is called a factory worker alcohol detector with automatic machine shutdown system with the help of pic microcontroller 18F452, alcohol sensor, GSM modem, LCD display and motor. This system shutdown the machine automatically after detecting the worker drunk condition. Block Diagram of Factory Worker Alcohol Detector with Automatic Machine Shutdown System: Here is the block diagram of this factory worker alcohol detector with automatic machine shutdown system with all essential components. Figure 1 Block Diagram of Factory Worker Alcohol Detector with Automatic Machine Shutdown System Components List with Detail of Factory Worker Alcohol Detector with Automatic Machine Shutdown System: Transformer: In this factory worker alcohol detector with automatic machine shutdown system, transformer is used for steps down AC voltages. It steps down the 220V ac to 12V ac and works on the principle of mutual induction. Bridge Rectifier: In this factory worker alcohol detector with automatic machine shutdown system, bridge rectifier is used for converting the ac voltages into dc voltages and consists of four diodes. Blocking Diode: In this automatic system, the blocking diode is used for blocking the reverse polarity current in other words it provides the protection of transformer. Voltage Regulator: In this factory worker alcohol detector with automatic machine shutdown system, voltage regulator is used for regulating the 12V dc into 5V dc. Here for regulating dc voltages LM 7805 IC have been used. LCD Display: In this factory worker alcohol detector with automatic machine shutdown system, LCD display is used for displaying the alerting mode of this system. It is 16 pins LCD display and is interfaced with microcontroller. It is powered up with 5V dc supply. Max232: In this factory worker alcohol detector with automatic machine shutdown system, the max 232 IC is only used for serial communication between microcontroller and GSM modem. It 16pins dual channel integrated circuit IC and is powered up with 5V dc supply. GSM Modem: In this factory worker alcohol detector with automatic machine shutdown system, the GSM modem is used for communication purposes between the user mobile phone and microcontroller. It is wireless base modem, accepts the sim card and works on the principle of used mobile phone subscription. Microcontroller: In this factory worker alcohol detector with automatic machine shutdown system, microcontroller pic18F452 is used for the intelligent control of this system. It is 40 pins integrated circuit microcontroller, programmed in C language with the help of mikro/c software and is powered up with 5V dc supply. Here it is interfaced with GSM modem, alcohol sensor and output motor. Buzzer: In this system, the buzzer is only used for releasing the sound during the alert mode on this system. Alcohol Sensor: In this factory worker alcohol detector with automatic machine shutdown system, the alcohol sensor is used for sensing the concentration of alcohol through human breathing. It is a 5 device and for its operation pin 3 is connected to VCC, pin 2 is connected to ground and pin 2 is connected to output. This sensor has very good sensitivity and fast response for alcohol detection. Motor: The working of this system is checked by connecting the dc motor at output side. Working Principle of Factory Worker Alcohol Detector with Automatic Machine Shutdown System: This factory worker alcohol detector with automatic machine shutdown system works on the principle of alcohol detection. Alcohol is detecting through the alcohol sensor, when this sensor senses the alcohol then its resistance is changed as per the concentration of alcohol, means when alcohol concentration is high then its resistance would be low and when alcohol concentration is low then its resistance would be high. Here for demonstration purposes dc motor has been used. When any drunk person takes the breath in front of alcohol sensor then alcohol sensor senses this breath and check the concentration level of alcohol if the concentration level is high then permissible level then it gives the logic high signal to microcontroller. After receiving the logic high signal, microcontroller goes into the alerting mode. In alerting mode, it turns on the buzzer for giving warning intimation and display this alert mode on LCD display. In this condition, microcontroller also gives the logic low signal to turn off the motor and gives the intimation message at authorized mobile phone through the GSM modem. So, this is the main working principle of the automatic system. Applications and Advantages of Factory Worker Alcohol Detector with Automatic Machine Shutdown System: 1. This factory worker alcohol detector with automatic machine shutdown system could be used in industries for saving human life. 2. By using this system machine could shutdown automatically when any drunk person is worked. 3. By using this system authorized person can easily know the worker mentally condition through the alerting message. 4. By using this system factory owners can easily escape from human and business loss. 5. This system is more precise, easy to install and has less installation, maintenance cost as compared to the other systems.

Factory Worker Alcohol Detector with Automatic Machine Shutdown System

May 23, 2017 PIC microcontroller projects

Vehicle Movement Based Street Light System Using PIC Microcontroller Vehicle movement based street light system using pic microcontroller is a system, which turned on or off the street lights after sensing the vehicle movement in a street. Basically, this an energy conservation system which saves the energy when there is no any vehicle movement in a street. Now days if we see in our vicinity areas, then there are so many lights which are always in turned on condition (day and night). Besides this, turned on/off the street light on daily bases also a big problem. So, for resolving this problem and energy conversation here we have designed a system that is called a vehicle movement based street light system using pic microcontroller with the help of pic 18F452 microcontroller, transformer, voltage regulator and IR sensors. So many streets lights could be turned on/off automatically by using this single system. In other words, this system turned on the lights when any vehicle pass through the street and turned off after passing them. Block Diagram of the Vehicle Movement Based Street Light System Using PIC Microcontroller: Here is the block diagram of this vehicle movement based street light system using pic microcontroller with all their essential components, Figure 1 Block Diagram of the Vehicle Movement Based Street Light System Using PIC Microcontroller Components List with Detail of the Vehicle Movement Based Street Light System Using PIC Microcontroller: Transformer: In this vehicle movement based street light system using pic microcontroller, transformer is used for connecting this system directly to 220V ac or wapda power supply. It steps down the 220V ac to 12V and works on the principle of mutual induction. Bridge Rectifier: Whole component of this vehicle movement based street light system using pic microcontroller works on dc power supply therefore the bridge rectifier is used for converting the ac voltages into dc voltages. It consists of four diodes Blocking Diode: In this system, the blocking diode is used for blocking the reverse polarity current, which could come from output components of this system. In other words, it provides the protection of transformer. Voltage Regulator: In this vehicle movement based street light system using pic microcontroller, the voltage regulator is used for regulating the 12V dc into 5V for powered up the whole electronic components of this system. Here LM 7805 voltage regulator is used for regulating the dc voltages. Microcontroller: In this vehicle movement based street light system using pic microcontroller, a 18F452 microcontroller is used for the intelligent control of this system. It is 40 pins integrated circuit IC and these pins could be configured as input or output. It is powered up with 5V dc and is programmed in c language with the help of mikro/c software. Here it is interfaced with IR transmitter, receiver and row of LEDs treated as a street lights. Row of LEDs Treated as Street Light: In this vehicle movement based street light system using pic microcontroller 6 light emitting diodes are used in a row which are treated as street light for the demonstration purposes of this system. These LEDs are PN junction diodes which emits the light when it is activated. For their activation voltages are applied across its leads then electrons are recombining with electron holes and then they release the energy in the form of light photons. These LEDs are interfaced with microcontroller and is powered up with 5V dc supply. IR Transmitter: In this vehicle movement based street light system using pic microcontroller, the IR transmitter is used for sensing the vehicle and sending the signal to IR receiver. It is basically a IR LED which emits the infrared light in the range of infrared frequency. It has almost 20-60-degree light emitting angle and few centimeter range, which depends upon it type. It is operated at 3V and consumer 20mA current. IR Receiver: In this vehicle movement based street light system using pic microcontroller, the IR receiver is used for receiving the infrared signal which comes from IR transmitter. It is interface with microcontroller and is operated at 5V dc supply. Working Principle of Vehicle Movement Based Street Light System Using PIC Microcontroller: This vehicle movement based street light system using pic microcontroller works on the principle of IR sensors working. When any vehicle which comes from any side of the road then IR sensors sense this vehicle and then sends the infrared light signal through IR transmitter towards IR receiver. The IR receiver which is interfaced with microcontroller received this signal and gives input high signal to microcontroller. The microcontroller which is basically the main controller of this system gives the signal high to respective LEDs, then this respective LED is turned on till for that time until the vehicle is in front of this respective transmitter. After passing the vehicle, the IR receiver gives the input low signal to microcontroller then microcontroller turned off the respective LED. This is only for the demonstration purposes but in a reality, streets light would be hanged instead of LEDs row and these streets lights would be controlled this vehicle movement based street light system. This system also works accordingly to the intensity of vehicles means when there is only one vehicle then it would be turned on the lights for small time similarly when there is so many vehicles then it would be turned on the light for that time until the last vehicle is passed. Applications and Advantages of Vehicle Movement Based Street Light System Using PIC Microcontroller: 1. This vehicle movement based street light system using pic microcontroller could be used in streets for controlling the street light. 2. This system could be used in shopping malls, universities and hospitals corridor for controlling their respective lights. 3. This system could be also used in homes for controlling the lights of store or vehicle garage. 4. By using this system, the customer can save the time, light energy and decrease the monthly bill. 5. This system less costly, less installation and maintenance cost and more efficient as compared to the others system

Vehicle Movement Based Street Light System Using PIC Microcontroller

May 22, 2017 PIC microcontroller projects